Conditions

Definition

Felty syndrome is a disorder that involves rheumatoid arthritis, a swollen spleen, decreased white blood cell count, and repeated infections. It is rare.

Causes, incidence, and risk factors

The cause of Felty syndrome is unknown. It is more common in people who have had rheumatoid arthritis for a long time. People with this syndrome are at risk of infection because they have a low white blood cell count.